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Finding the Fourth Proportional to 257,479.70, 386,124.57 and 88,956.77

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Solution

The fourth proportional to 257,479.70, 386,124.57 and 88,956.77 is: 133,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,479.70 : 386,124.57 = 88,956.77 : x
  2. Step 2: Convert to fraction form
    257,479.70/386,124.57 = 88,956.77/x
  3. Step 3: Cross multiply
    257,479.70x = 386,124.57 × 88,956.77
  4. Step 4: Simplify right side
    257,479.70x = 34,348,392,634.22
  5. Step 5: Solve for x
    x = 34,348,392,634.22/257,479.70
  6. Step 6: Final answer
    x = 133,402.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.